Can Garen get an indicator for his Ult as well?
When Zed ulti's a champ and the burst is enough to kill them an shuriken indicator appears. When Cho'gath can Nom Nom kill you, a circle indicator appears. When Garen get's you low enough, a justice indicator should appear. I can't say the same for Darius because if it has an HP bar, he can kill it.